Sight mount for guns



April 23, 1929.

J. L. HATCHER 1,710,022

SIGHT MOUNT FOR GUNS Filed June 21, 1926 awn/Idem Llamas L Hatcher' 1Patented Apr; 23, 11929.

v The invention described herein may be manufactured and used by or forthe Governmentfor governmental purposes without the I payment'to meofany royalty thereon."

This invention relates to a sight mount for rifles. I

1 3 In military rifles of the reciprocating bolt type there'is, usuallyprovided asmall-hinged f rearward movement of the bolt in theoperation-of extracting and loading and which may be moved, intoposition to permit removal of thebolt from the gun. The presentinvention contemplates a pivoted sight, the base conforming to thecontour stop which is arranged to limit movement of {the bolt "when thesight is in position and 1 which permits removal ofthe bolt when the I1' sight-is swung out of position. Nospecial f provisionis required formounting the base to the standard service rifle now in use by H simplyremoving the bolt stop and attaching the sight base by replacing thehinge pin. "if Withthese andother objects in view, my inventionresidesin the novel arrangement andcombination of parts and in the details ofconstruction hereinafter described and 3o claimed, itbeing understoodthat changes in the precise embodiment of the invention may be madewithin the scope of what is claimed j {without departing from the spiritof the invention. Q

.A'practical embodiment of my invention *wherein: t g t r Fig. 1 is afragmentary view in side eleva I 'tion of the receiver portion of thestandard 10' service rifle showing the provision for mount- -ing*a boltstop; I j Fig. 2is a detail view of the standard bolt j -F ig.-3;is afragmentary plan view of the bolt and bolt stop; I

" Fig. 4 isa view similar to Fig. 1 with a sight base constructed inaccordance with the invention inplace thereon; r Fig.5 is a transversesectional view onthe ,{5 lineHofFigl;

' Fig. 6 is a similar view showing the sight in inoperative'position.

;. JAM -I HAT -m T UNITED STATES ARMY; meseavm a stop-in the receiverwhich normally limits of the receiver and including an integral plateand the sight may be readily applied "is illustrated in the accompanyingdrawings, I

SIGHT MOUNT. FOR GUNS.

Application filed June 21, 1 926. .Serial No. 117,650.

r enamel UNDER THE ACT or MARCH 3, 1883, AS AMENDED APRIL so, 1928; so.-e. 757.

Referring to the drawings by numerals of v reference There is shown inFig.1a standard service rifle 5 provided with the usualreceiver 6 inwhich reciprocates a bolt 7 carrying the firing I pin and functioning ina well knownmanner to ram a cartridge into the chamber and'to extractthe empty case. The rear portion of.

the receiver is provided at one side with a slot or cut out portion 8 inwhich is hinged a bolt stop 9 (Fi 2 position to enable the bolt to beremoved from the gun. I f

In Fig. 4 there is 10, the base 11 of which is formed to straddle thereceiver,its under face conforming to thecontour thereof. One leg of thebase is provided with a foot bearing 12 which may be, and in the presentinstance is identical with fits into the slot 8 where it is heldby thehinge .pin 13. The foot is of cylindricalshape and I I V whenthe sightis in operative position projects within the receiver where a shoulderportion 14 is disposed in the path of thestop lug 7 a on the bolt. Thefoot is formed with a:

adjusted position there is mounted in the n I base 11 a spring pressedplunger 16 which rides in a groove 17 in'the receiver and engages in therecesses 18.

I claim: p r 1. In a gun, a receiver provided with a slot, a boltreciprocable in the receiver, a sight base conforming to the contour ofthe re-' ceiver, a foot bearing constituting a bolt stop integral withthe base and receivable in' the slot in the receiver and a plungermounted in.

the base and engaging the receiver to hold the base in position. t 2. Ina gun, a receiver provided with a slot,

) which is movable into a shown a receiver sight i 70 the standard boltstop shown in Fig. 2 and a bolt reciprocable in the receiver, asightbase conforming to the contour of the receiver and having an extremityreceivable 1n the slot 1n the receiver, said extremity constltuting abolt stop and means for hingedly securing the I v base to the receiver.I 3. In a gun,a receiver, abolt reclprocable '1 asight;

receiver; saidfba se having a pdrtion which base i in place 'On-therciver and. permits 5 removal of .the bolt when the sight base is I'thepa'qh of thebolt 7' 7 L :;HATCHER Y mov ed ofithe repeiver I I 'a;base adapted' foif hinged at; j

The combination fliboltnction ri e, m 1

ing a, i006 portion movablef intojjandi out Of "ia chmm to -a rifle indr'ovidedgwith v@1501;- stop adja cent the point of attachment," a v

